Via Deadline, former Broadway star Rodriguez will take the role of Sally's (Gerwig's) best friend Juliet, a sexy, flamboyant force of nature who runs the most successful fashion blog in the country. We previously heard Eliza Dushku might read for a role in the pilot, speculated to be that of Juliet, though there's still one remaining female regular role up for grabs.

Apart from Gerwig, Tarver and Rodriguez, the still uncast roles of the spinoff include the narrating future Sally, Sally’s older gay brother Danny, and Juliet’s coworker Frank, who harbors a one-sided crush on Sally. Also worth noting is that where first it was thought that we’d meet at least some of the new cast in the final episodes of ‘How I Met Your Mother,’ ‘How I Met Your Dad’ will in fact film its own pilot independent of any of the established characters. 'Up All Night' creator Emily Spivey will head up the show creatively with 'HIMYM' producers Carter Bays and Craig Thomas, with Gerwig likely taking on writing duties, as well.